M г---------------------------------18.8 л
2Al+3H2SO4=Al2(SO4)3+3H2
2*27--------------------------------3*22.4 л
m(Al)=15.1 г
2Na + 2H2O = 2NaOH + H2
Na(0) - 1 e(-) = Na(+) I 1 > 2
2H(+) + 2e(-) = H2(0) I 2 > 1
CH4+Cl2=CH3Cl+HCl
CH3Cl+NH3=CH3NH2+HCl
2CH3NH2+H2SO4=(NH2CH3)2SO4
Ba⁺²C⁺⁴O₃⁻²=Ba⁺²O⁻²+C⁺⁴O₂⁻²
1.скорее всего г.
2.в
<span>HCOONa+H2O=HCOOH+NaOH
</span><span>C6H5ONa+H2O=C6H5OH+NaOH</span>